Wrench



(No Model.) v

B. F. LANCASTER.

WRENCH.

No. 376,891. Patented J.a.nf24,1 888 v v UNITED STATES PATENT OFFICE.

' BRADFORD F. LANCASTER, 0F AUGUSTA, MAINE.

1WREN-CH.

SPECIFICATION forming part of Letters Patent No. 376,891, dated January24, 1888. I Application filed September 22, 1885. Serial No. 177,865; Nomodel.) I

This invention relates to wrenches, and par-.

1o ticularly to that class known as sliding-jaw and side-barf and thenovelty consists in a movable jaw made in two parts locked together by arivet elliptical in cross-section and interlocked together, and in-thecombination thereof \viththe side bars and thesorew and the fixed jaw,substantially in the manner and for the purpose set forth, referencebeing had to the accompanying drawings, in which' Figure 1 represents aside elevation. Fig. 2 is a longitudinal sect-ion. Fig. 3 is a transverse section through a x of Fig. 1. shows details of movable jaw.

B is a fixed jaw joined to the ends of two side bars, 00. The oppositeends of the bars O O are connected together by the nut D. Inconstructingthe wrench I cast the jaw B, the side bars, 0 G, and" the nut D in onepiece. The movable jaw A slides between the bars 0 G, the jaw beingformed with a slot in eachside to admit the bars. (See'Fig. 3.) Thescrew E passes through the nut D, which is tapped out to fit it, and ithas on one end the handle H, while the other end turns in themovablejawA.

The construction of jaw A and its manner of connecting with the screw Eare as follows,

viz: The jaw A is cast in two pieces. (See Fig. 4..) The main-portion Ais provided with the rivet a, oblong or elliptical in shape incross-section, and the elliptically-shaped recess a in the shoulder of.Part A.- consists of a cap containing an elliptically-shaped hole, a, toreceive the rivet a, and a projection or lug, a, containing asemicircular recess, a 4 5 When these parts are riveted together bypassing rivet a through hole a, the two recesses a and a come togetherand form a circular inclosure just suificient to contain the shoulder d,which is turned on the end of screw E, and

Fig. at

which is inserted before the two parts of jaw 50 A are riveted. j Itwill be noted that the projection or lug 0;

comes down upon the face of the partA just parts and greatly increasethe resistanceto all portion A of the jaw is then secured to the part A"by heading down the rivet.

The simple construction here shown enables me to manufacture my wrenchat a low cost v, and to'secure anarticle of great strength anddurability,while its simplicity of action makes it peculiarly convenientand useful. I

I am aware that wrenches have been made with side bars,- and also with ascrew operated by a handle, as in the present casejbutI am not awarethat any wrench has possessed the combination of desirable qualitiesshown in my wrench. w 1

I am aware'that it is not broadly new to make a tap-wrench with a headin two parts, each flat-faced and recessed and the two united by ascrew-bolt, and such construction I do not claim. I

I claim Inawrench, asliding jaw made in twoparts, the one having'anelliptically-shaped rivet and the other an elliptically-shaped holeand apro jecting lug, and secured together by heading. said rivet, the lug ofthe one part coming against the face of the other part, whereby the twoparts are locked and interlocked together, substantiallyin the mannerand for the pur poseset forth. 1 v v In testimony whereof I affix mysignature in'presence of two witnesses. i

' BRADFORD F. LANCASTER.

Witnesses: I i

S. W. Barns; E. W. ROBERTS.

